Android带删除按钮的ListView
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import java.util.ArrayList;import com.ql.adapter.DeletableAdapter;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ListView; public class Test_4_Activity extends Activity { private DeletableAdapter adapter; private ArrayList<String> text; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.test4); ListView list_view = (ListView) findViewById(R.id.list_view); text = new ArrayList<String>(); text.add("111"); text.add("222"); text.add("333"); text.add("444"); // 初始化数据结束 adapter = new DeletableAdapter(this, text); list_view.setAdapter(adapter); // list_view.setSelector(R.drawable.list_select_color); Button button = (Button) findViewById(R.id.button); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub text.add("10000"); adapter.notifyDataSetChanged(); } }); }}?
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import java.util.ArrayList; import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.view.View.OnClickListener;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast; import com.ql.activity.R; public class DeletableAdapter extends BaseAdapter { private Context context; private ArrayList<String> text; public DeletableAdapter(Context context, ArrayList<String> text) { this.context = context; this.text = text; } @Override public int getCount() { // TODO Auto-generated method stub return text.size(); } @Override public Object getItem(int position) { // TODO Auto-generated method stub return text.get(position); } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub final int index = position; View view = convertView; if (view == null) { LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); view = inflater.inflate(R.layout.row_simple_list_item_2, null); } final TextView textView = (TextView) view .findViewById(R.id.simple_item_1); textView.setText(text.get(position)); final ImageView imageView = (ImageView) view .findViewById(R.id.simple_item_2); imageView.setBackgroundResource(android.R.drawable.ic_delete); imageView.setTag(position); imageView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub text.remove(index); notifyDataSetChanged(); Toast.makeText(context, textView.getText().toString(), Toast.LENGTH_SHORT).show(); } }); return view; }}?
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<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content"> <ImageView android:id="@+id/simple_item_2" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:focusable="false" /> <TextView android:id="@+id/simple_item_1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_alignParentLeft="true" /></RelativeLayout>
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这里要实现点击ListView里面的一个控件而不是选中一行。
最好重写Adapter，而不要使用其自带的SimpleAdapter,否则该子控件的事件就不那么好处理了！
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